Take on changing conditions and challenging treks in comfort. Up for any route you pick, the women's Smartwool Intraknit Merino Tech pullover hoodie breathes, wicks, warms and resists wind and rain.

ClothingSweaters and Sweatshirts

Fuel your exploration with knit-in wind protection, mesh ventilation and water resistance. This men's Smartwool Intraknit Merino Tech quarter-zip pullover is an essential for your adventure kit.

ClothingSweaters and Sweatshirts

Going far always feels great when the women's Smartwool Intraknit Merino Tech quarter-zip is in your kit. It fuels your exploration with knit-in wind protection, mesh ventilation and water resistance.

ClothingSweaters and Sweatshirts

No matter where your journey takes you, the men's Smartwool Intraknit Merino Thermal Pants are sure to take your comfort and movement to new heights, even during your high-intensity activities.

Pants ParentPants

3D-knit to seamlessly integrate insulation, articulation and ventilation, Smartwool Intraknit Merino Thermal women's pants allow you to move freely and comfortably no matter how you're getting active.

Pants ParentPants

Engineered 3D-knit panels of Merino Sport yarn deliver perfectly placed breathability and thermoregulating comfort on the women's Smartwool Intraknit Thermal Max Merino Pattern hoodie.

Underwear TopsBase Layer Tops

With merino comfort, ventilation and articulated flex zones, the Smartwool Intraknit Thermal Max Quarter-Zip base layer top will be what you grab first for high-intensity, cold-weather adventures.

Underwear TopsBase Layer Tops

With seamlessly integrated insulation and ventilation and articulated flex zones, the women's Smartwool Intraknit Thermal Max Quarter-Zip base layer top is made for high-intensity, cold-weather fun.

Underwear TopsBase Layer Tops

Stay comfortable on cooler-weather adventures in the Smartwool Intraknit Thermal Merino men's 3/4-length base layer bottoms, which have a performance-enhancing design and a shorter, versatile length.

Underwear BottomsBase Layer Bottoms

A winter runner's best friend, these Smartwool Intraknit Thermal Merino arm sleeves help you maintain heat while also helping with moisture management and odor control during cold-weather runs.

WarmersArm Warmers

The winter-ready pants you need to perform all season, the men's Smartwool Intraknit Thermal Merino Base Layer 3/4 Bottoms use merino wool to help keep you comfortable on every cold-weather outing.

Underwear BottomsBase Layer Bottoms

Built to flex and follow you like a shadow, the men's Smartwool Intraknit Thermal Merino base layer bottoms put warmth first, while 3D knit mesh ventilation helps keep you dry and comfortable.

Underwear BottomsBase Layer Bottoms

Here to help you warm up to cold weather, Smartwool Intraknit Thermal Merino base layer bottoms have 3D-knit articulation that adds an enhanced fit and helps keep you as mobile as ever.

Underwear BottomsBase Layer Bottoms

Built to flex and follow you like a shadow, the women's Smartwool Intraknit Thermal Merino base layer bottoms are 3D knit for insulation, ventilation and flexibility for your high-intensity workouts.

Underwear BottomsBase Layer Bottoms